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#1
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Was reading an article in an Australian mag about an LED based AoA indicator
in a homebuilt. The author stated that in many ways it "replaced" the AI for him. Anyone have experience with them? |
#2
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xerj,
Yes, but only a few times, and far better than an asi (not ai - attitude indicator). Very easy to use and I found that pilots I flew with were much less likely to carry too much speed on final approach, a common cause of landing accidents. I like them a lot. It's no wonder the Navy uses them for all landings. All the best, Rick |
#3
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Yes, but only a few times, and far better than an asi (not ai -
attitude indicator). Woops. Yup -- you knew what I meant. I'd love to have a play around with one, experimenting with the various V speeds and such. I'm sure it would be a good training device. |
#4
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More than a training device, it's a true real world device in that you
don't have to adjust speeds for weight, the AOA indicator does it for you. Simplifies life a great deal. All the best, Rick |
#5
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Used them many times. If I had to choose only one instrument to have in my
airplane it would be an AOA indicator. In the T38 you have a choice in how to land the airplane. You can fly the approach at 155kts plus fuel [1kt per 100lbs 1000lbs remaining] OR, you can fly the AOA indexer. Optimum AOA for approach in the T38 [ ..6alpha on the indicator or donut on speed] will automatically produce the right approach speed for the GW. Works the same way in the ole' puddle jumper as well :-) Simple! Dudley Henriques "xerj" wrote in message ... Was reading an article in an Australian mag about an LED based AoA indicator in a homebuilt. The author stated that in many ways it "replaced" the AI for him. Anyone have experience with them? |
#6
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"Dudley Henriques" wrote in message
.net... Used them many times. If I had to choose only one instrument to have in my airplane it would be an AOA indicator. In the T38 you have a choice in how to land the airplane. You can fly the approach at 155kts plus fuel [1kt per 100lbs 1000lbs remaining] OR, you can fly the AOA indexer. Optimum AOA for approach in the T38 [ .6alpha on the indicator or donut on speed] will automatically produce the right approach speed for the GW. Works the same way in the ole' puddle jumper as well :-) Simple! Dudley Henriques So I gotta ask...why aren't they standard equipment? Wouldn't it be a good thing to get another form of reference when learning slow flilght / stalls / approach to land? FWIW, I've flown lots of F16 hours on my PC and an AOA indexer makes the relationship between pitch and power very easy to see and understand. Jay Beckman PP-ASEL AZ Cloudbusters Chandler, AZ |
#7
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![]() "Jay Beckman" wrote in message news:E_D7f.96521$lq6.70959@fed1read01... "Dudley Henriques" wrote in message .net... Used them many times. If I had to choose only one instrument to have in my airplane it would be an AOA indicator. In the T38 you have a choice in how to land the airplane. You can fly the approach at 155kts plus fuel [1kt per 100lbs 1000lbs remaining] OR, you can fly the AOA indexer. Optimum AOA for approach in the T38 [ .6alpha on the indicator or donut on speed] will automatically produce the right approach speed for the GW. Works the same way in the ole' puddle jumper as well :-) Simple! Dudley Henriques So I gotta ask...why aren't they standard equipment? Wouldn't it be a good thing to get another form of reference when learning slow flilght / stalls / approach to land? In my opinion yes. AOA is optional equipment for GA and I understand the airlines have done a study on it's use in large aircraft. Some of the airlines have integrated an AOA indicator into their MFD's as an add on option. The Air Force has never really been a huge fan of AOA on approach, but the Navy uses it because their approach is backside and has to be completely stabilized to the deck. As far as I know, Boeing has done a study on it and submitted the results to the airlines. Dudley |
#8
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"Dudley Henriques" wrote
AOA is optional equipment for GA and I understand the airlines have done a study on it's use in large aircraft. Most of us joining PanAm during, or just after Vietnam, had considerable experience flying AOA and couldn't understand why the latest jetliners were not so equipped. It soon became obvious that ALPA and the old WWII bomber captains that it represented wanted nothing to do with modern technology. This group rejected CVRs, GPWS, AOA and anything else that would have required them to be retrained. This group of pilots are held in high esteem by almost everyone except those of us who had to fly with them. They had received minimal training for their B-17 or C-47 job in the Airforce and only through the strength of the union, barely made it through the jet transition. They still (1960's) would fly a "raw data" ILS instead of using the flight director. Most of them had no business in a jet airplane. PanAm crashed a large number of their B-707s due to pilot issues. Bob Moore |
#9
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![]() "Bob Moore" wrote in message . 122... "Dudley Henriques" wrote AOA is optional equipment for GA and I understand the airlines have done a study on it's use in large aircraft. Most of us joining PanAm during, or just after Vietnam, had considerable experience flying AOA and couldn't understand why the latest jetliners were not so equipped. It soon became obvious that ALPA and the old WWII bomber captains that it represented wanted nothing to do with modern technology. This group rejected CVRs, GPWS, AOA and anything else that would have required them to be retrained. This group of pilots are held in high esteem by almost everyone except those of us who had to fly with them. They had received minimal training for their B-17 or C-47 job in the Airforce and only through the strength of the union, barely made it through the jet transition. They still (1960's) would fly a "raw data" ILS instead of using the flight director. Most of them had no business in a jet airplane. PanAm crashed a large number of their B-707s due to pilot issues. Bob Moore That's interesting. I know it's hard sometimes to wean pilots off those steam gauges and into new technology. What was it one guy said the first time he used an MFD? "Now I know how my dog feels watching TV" :-) On raw data and the FD; It would seem prudent to me to have the guy flying the approach on the FD with the other seat monitoring the raw data. I know the one time I landed a DC8, (just a guest of the chief pilot of the airline on a ferry flight into Alaska ) this was the procedure we used. My understanding on AOA for you heavy drivers is that you actually have preferred using a calculated approach speed for the GW rather than AOA because the configurations and the weights vary so much. I've seen a fairly recent report from Boeing discussing AOA with the majors, but as of now, I think it's still VERY optional, and the MFD with AOA on a side bar has to be specially ordered during the pre-sale spec meetings between the line main office and Boeing. Don't know about Airbus. Haven't heard anything there at all. Dudley |
#10
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Probably the most unique AoA indicator I ever saw was in Nebraska on a
homebuilt. Don't know what the aircraft was...open cockpit, high wing, looked like a bathtub with wings and engine in back....and out on the left strut attached with a pivot point was a crescent shaped piece of painted aluminum that had its narrow edge pointed forward. There was a 90deg bend at the very top of the crescent to catch the wind not unlike some stall indicators. On the face of the crescent, visable to the pilot, were painted segments that read, "Not Enough - Just Right - Too Much". I still laugh at the simplicity of it! |
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